Sorry to hear about your loss Shrek.
Had a case recently, 4 month old Jayco Expanda stolen from the suburb where I work.
A bloke who owns a caravan himself, saw the crooks vehicle towing it. It wasn't hooked up properly, chains not secured, lights not plugged in and 4x4 towing a road going van.
Having towed vans himself he thought this can't be right, noted the vehicle rego and immediately contacted Crimestoppers.
We eventually tracked the van down to the crooks stepfathers address after full denials.
Moral of the story. Even the smallest little things that the public notice can help piece a puzzle together and bring these scum to justice. If you see something that ain't right, call Crimestoppers. Whats the worst that can happen, some copper rings you and asks for a bit more info.
Good luck and I hope you get your camper back.